It is one of football’s great cliches: 2-0 is the most dangerous lead. It is never more dangerous than in an aggregate scoreline with the trailing side playing at home in the second leg.
This week’s Women’s Champions League served two perfect examples in London. On Wednesday, Arsenal hosted Real Madrid, trailing 2-0 from the away game in Spain. On Thursday, Chelsea welcomed Manchester City to Stamford Bridge in the same situation.
Like London buses, you wait for one 2-0 comeback to be overturned, and then two come along at once.
In north London, Arsenal were boosted by a record crowd for a Champions League quarter-final in England: 22,517.